CN207882645U - A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen - Google Patents
A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen Download PDFInfo
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- CN207882645U CN207882645U CN201820249501.7U CN201820249501U CN207882645U CN 207882645 U CN207882645 U CN 207882645U CN 201820249501 U CN201820249501 U CN 201820249501U CN 207882645 U CN207882645 U CN 207882645U
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- projection screen
- tube
- end cap
- support rod
- shell body
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Abstract
The utility model discloses a kind of transversely opened and closed parallel activity hinges to cut supporting type backrush projection screen, including projection screen, left shell and right shell body, the first tube is rotatably connected in left shell, projection screen one end is fixedly connected with the first tube, the projection screen other end is fixedly connected with right shell body, first tube is equipped with the first elastic component, first elastic component can generate the torque for hindering or promoting the first tube to rotate, supporting device is connected between left shell and right shell body, supporting device includes two the first support rods for being hinged on left shell and two the second support rods for being hinged on right shell body, first support rod and the second support rod are hinged in free end, the second elastic component that may make that right shell body deviates from left shell movement is equipped between left shell and the first support rod.The mechanical supporting device can realize projection screen automatically open and backrush, simple to operate, reliability is high.
Description
Technical field
The utility model is related to projection curtain device technical field, more particularly to a kind of transversely opened and closed parallel activity hinge cuts bearing
Formula backrush projection screen.
Background technology
In order to improve the user experience of projection curtain device, more and more projection screens both increase projection screen and automatically open
And the function of backrush.
Currently, most projection curtain device is all to realize automatically opening and returning for projection screen by motor control
Volume, but the mode of motor control is easy to happen failure, reliability is not very high.Also, for transversely opened and closed projection
For proscenia, it can not utilize the gravity of projection screen itself that curtain is made to keep smooth, if still by the way of motor control,
It then cannot achieve opening and the backrush of projection screen.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of mechanical achievable projection screens to automatically open
Supporting type backrush projection screen is cut with the transversely opened and closed parallel activity hinge of backrush.
Used technical solution to solve above-mentioned technical problem：A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush
Projection screen, including projection screen and in semilune strip and can opposite fitting left shell and right shell body, the left housing
Be rotatably connected to the first tube in vivo, one end of the projection screen is fixedly connected with the first tube, the projection screen it is another
One end is fixedly connected with right shell body, first tube be equipped with the first elastic component, first elastic component can generate obstruction or
The torque for promoting the first tube to rotate is connected with the bearing machine in lateral symmetry arrangement between the left shell and right shell body
Structure, the supporting device include that two the first support rods for being respectively hinged at left shell upper and lower part and two are respectively articulated with
The second support rod in right shell body upper and lower part, be located at left shell and right shell body same section the first support rod and second
It holds bar to be hinged in free end, the second elastic component, second elastic component is equipped between the left shell and the first support rod
It can generate and pull the rotation of the first support rod so that mobile pulling force occurs away from left shell for right shell body, one of them described the
Two support rods are equipped with limiting slot, another described second support rod is equipped with the limited post for being embedded in limiting slot, the limit
Column can reciprocatingly slide along limiting slot.
Further, first tube is hollow tube, and first elastic component is to be embedded in inside hollow tube
The hook of torsional spring, torsional spring one end is fixedly connected with hollow tube, the hook and left shell of described torsional spring the other end
It is fixedly connected.
Further, a limit shaft for running through torsional spring is installed in the left shell, the end of the limit shaft is set
There is limiting through hole, the hook and limiting through hole of described torsional spring the other end, which pass through, trip bolt.
Further, second elastic component is to draw high spring.
Further, the second tube is equipped in the right shell body, the other end of projection screen is fixedly connected on the second tube
On.
Further, the lower end of the left shell and right shell body is respectively equipped with left end cap and right end cap in semilunar,
The bottom of the left end cap and right end cap be equipped with it is a pair of perpendicular to projection screen and be in holder positioned opposite.
Further, the left end cap and right end cap are equipped with groove that is perpendicular to projection screen and running through end cap, described
Holder is U-shaped spring, and the both ends of the U-shaped spring are bent to form limiting section, and the side wall at the groove both ends is equipped with for limit
The limit hole that position portion is inserted into.
Further, the bottom surface of the groove is equipped with a pair of limit hook for being limited to U-shaped spring in groove.
Further, the top of the left end cap is equipped with the limited block for being directed toward right end cap, and the top of the right end cap is equipped with
It is directed toward the elastic opening part of left end cap, the limited block includes the driving portion that lateral dimension changes from small to big and lateral dimension by big
The engaging portion to become smaller, the elastic opening part include that opening size transition part from large to small and opening size change from small to big
Lock part, the engaging portion are mutually abutted with lock part.
Advantageous effect：In technical solutions of the utility model, using mechanical supporting device, generated using the first elastic component
The torque for hindering or promoting the first tube to rotate realizes the backrush of projection screen；The pulling generated using the second elastic component
First support rod rotates so that right shell body realizes the opening of projection screen away from the mobile pulling force of left shell generation.For
Projection screen in opened condition first gives a starting force for making projection screen backrush so that and the arm of force of the second elastic component reduces,
It is more than the torque that the second elastic component generates until the first elastic component generates torque, the gradual automatic rewinding of projection screen works as left shell
When being bonded with right shell body, the second elastic component is overlapped with the first support rod, forms self-locking state.For the projection screen in closed state
Cloth first gives a starting force for making projection screen open so that the arm of force of the second elastic component increases, until the second elastic component generates
Torque be more than the torque that the first elastic component generates, projection screen gradually automatically opens.Simple to operate, reliability is high.
Description of the drawings
The utility model is described further with reference to the accompanying drawings and examples；
It is in pull open shape that Fig. 1 cuts supporting type backrush projection screen for a kind of transversely opened and closed parallel activity hinge of the utility model embodiment
The overall schematic of state；
Fig. 2 is the utility model embodiment left shell and right shell body is in the schematic diagram of fit-state；
Fig. 3 is the schematic diagram that the utility model embodiment parallel activity hinge cuts that supporting device is in state of pulling open；
Fig. 4 is the assembling schematic diagram for the first tube that the utility model embodiment is embedded with torsional spring；
Fig. 5 is the utility model embodiment U-shaped spring in the schematic diagram for opening holding state；
Fig. 6 is the schematic diagram that the utility model embodiment U-shaped spring is in closed configuration；
Fig. 7 is the assembling schematic diagram of the utility model embodiment limited block and elastic opening part.
Specific implementation mode
Referring to Figure 1 to Figure 7, a kind of transversely opened and closed parallel activity hinge of the utility model embodiment cuts supporting type backrush projection
Curtain, including projection screen 3 and in semilune strip and can opposite fitting left shell 1 and right shell body 2, in left shell 1
It is rotatably connected to the first tube, one end of projection screen 3 is fixedly connected with the first tube, will be projected by rubberizing
The end of curtain 3 is pasted onto on the arc surface of the first tube.The other end of projection screen 3 is fixedly connected with right shell body 2, specifically
Ground, right shell body 2 is interior to be equipped with the second tube, and the other end of projection screen 3 is fixedly connected on the second tube.First tube is equipped with
First elastic component, the first elastic component, which can generate, to be hindered or the torque that promotes the first tube to rotate, and the first tube has and makes throwing
Shadow curtain 3 keeps the trend wound on its periphery.The bearing in lateral symmetry arrangement is connected between left shell 1 and right shell body 2
Mechanism 4, supporting device 4 include that two the first support rods 41 for being respectively hinged at 1 upper and lower part of left shell and two cut with scissors respectively
It is connected on the second support rod 42 of 2 upper and lower part of right shell body, is located at the first support rod 41 of 2 same section of left shell 1 and right shell body
It is hinged in free end with the second support rod 42, the second elastic component, the second bullet is equipped between left shell 1 and the first support rod 41
Property part can generate and pull the rotation of the first support rod 41 so that mobile pulling force occurs away from left shell 1 for right shell body 2, wherein one
A second support rod 42 is equipped with limiting slot 421, another second support rod 42 is equipped with the limited post for being embedded in limiting slot 421
422, limited post 422 can reciprocatingly slide along limiting slot 421, and by limit, the first support rod 41 and the second support rod 42 are in left housing
The top and the bottom of body 1 and right shell body 2 keep moving synchronously, and then ensure that right shell body 2 is in vertically movable, ensure that entire projection screen
Cloth 3 can be smooth opening and backrush.
The utility model use mechanical supporting device 4, using the first elastic component generate obstruction or promote the first tube
The torque to rotate realizes the backrush of projection screen 3；Using the second elastic component generate the first support rod of pulling 41 rotate into
And so that mobile pulling force occurs away from left shell 1 for right shell body 2, realize the opening of projection screen 3.By the company of the supporting device 4
Mode is connect it is found that the first elastic component is with the opening of projection screen 3, torque becomes larger；Second elastic component is with projection screen 3
Opening, the arm of force becomes larger, and pulling force also becomes larger.For projection screen 3 in opened condition, first giving one makes projection screen
The starting force of 3 backrush of cloth so that the arm of force of the second elastic component reduces, and is more than the second elastic component until the first elastic component generates torque
The torque of generation, 3 gradual automatic rewinding of projection screen, when left shell 1 and right shell body 2 are bonded, the second elastic component and first
The coincidence of bar 41 is held, self-locking state is formed.For the projection screen 3 in closed state, one is first given to make the first of the opening of projection screen 3
Beginning power so that the arm of force of the second elastic component increases, until the torque that the second elastic component generates is more than the torsion that the first elastic component generates
Square, projection screen 3 gradually automatically open.Simple to operate, reliability is high.
Preferably, the first tube is hollow tube 7, the first elastic component is the torsional spring 71 being embedded in inside hollow tube 7,
The hook of 71 one end of torsional spring is fixedly connected with hollow tube 7, and the hook of 71 the other end of torsional spring is fixed with left shell 1 to be connected
It connects.Meanwhile a limit shaft 11 for running through torsional spring 71 is installed in left shell 1, the end of limit shaft 11 is equipped with limiting through hole,
The hook and limiting through hole of 71 the other end of torsional spring, which pass through, trip bolt 12.By trip bolt 12 by 71 the other end of torsional spring
Hook be fixedly connected with limit shaft 11, hollow tube 7 relative to left shell 1 rotate, one end of torsional spring 71 follows rotation, torsional spring 71
The other end do not rotate with respect to left shell 1.Projection screen 3 is opened, and 71 deformation of torsional spring is bigger, and torque is bigger；Projection screen 3
Backrush, 71 deformation of torsional spring is smaller, and torque is smaller.Meanwhile when left shell 1 and right shell body 2 are bonded to each other, torsional spring 71 there is also compared with
Small deformation, it is possible to provide the torque of self-locking.
Preferably, the second elastic component is to draw high spring 43.The one end for drawing high spring 43 is fixed on the first support rod 41
Middle part, the other end are fixed on left shell 1, and its fixed point compared to the first support rod 41 hinge joint closer to left shell
1 upper and lower ends portion.When supporting device 4 is in closed configuration, draws high spring 43 and keeps conllinear with the first support rod 41 substantially,
Be conducive to the state that supporting device 4 maintains a self-locking；When supporting device 4 is laterally-opening, draws high spring 43 and act on first
The arm of force in support rod 41 gradually increases, and the first support rod 41 is driven to rotate up and down respectively, and then right shell body 2 is pushed to carry on the back
It is moved from left shell 1, until projection screen 3 is fully open.
Preferably, the lower end of left shell 1 and right shell body 2 is respectively equipped with left end cap 5 and right end cap 6 in semilunar,
The bottom of left end cap 5 and right end cap 6 be equipped with it is a pair of perpendicular to projection screen 3 and be in holder positioned opposite.Perpendicular to projection
Curtain 3 is arranged, and is conducive to the balance for maintaining entire projection screen, is not susceptible to topple over phenomenon, is placed convenient for vertical.
Preferably, left end cap 5 and right end cap 6 are equipped with groove 51 that is perpendicular to projection screen 3 and running through end cap bottom,
Holder is U-shaped spring 52, and the both ends of U-shaped spring 52 are bent to form limiting section, and the side wall at 51 both ends of groove is equipped with for limit
The limit hole that portion is inserted into.U-shaped spring 52 can the rotation of relative limit hole, realize the opening of U-shaped spring 52 and close up.When not needing U
When shape spring 52 is supported, closes up and be placed in groove 51, reduces whole storage size.
Preferably, the bottom surface of groove 51 is equipped with a pair of limit hook for being limited to U-shaped spring 52 in groove 51
53.Limit hook 53 is fixed on the one end of groove 51, includes two protrusions back to setting, and protrusion is directed toward the side of groove 51
Wall above rotation U-shaped spring 52 to protrusion, applies a pressure so that U-shaped spring 52 when needing to close up on U-shaped spring 52
It deforms upon, and then is caught in protrusion, realize the limit of U-shaped spring 52.Concrete operations are：First by a U-shaped spring 52
It turns in groove 51, then another U-shaped spring 52 is turned to and is caught in protrusion, it is ensured that two U-shaped springs 52 will not
It is freely rotated.
Preferably, the top of left end cap 5 is equipped with the limited block 54 for being directed toward right end cap 6, the top of right end cap 6, which is equipped with, to be directed toward
The elastic opening part 55 of left end cap 5, limited block 54 include the driving portion 541 that lateral dimension changes from small to big and lateral dimension by big
The engaging portion 542 to become smaller, elastic opening part 55 include opening size transition part 551 from large to small and opening size by small change
Big lock part 552, engaging portion 542 are mutually abutted with lock part 552.The abutting of driving portion 541 struts bullet to transition part 551
Property opening member 55 form buckle-type locking until engaging portion 542 is abutted with lock part 552, further realize the projection screen from
Lock.Meanwhile also being provided with limited block 54 and elastic opening in left end cap 5 positioned at left shell 1 and the top of right shell body 2 and right end cap 6
Part 55 realizes the upper and lower end parts self-locking of projection screen.
The embodiment of the utility model is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
State embodiment, the technical field those of ordinary skill within the scope of knowledge, this practicality can also not departed from
Various changes can be made under the premise of novel objective.
Claims (9)
1. a kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen, it is characterised in that：Including projection screen and it is in
Semilune strip and can opposite fitting left shell and right shell body, be rotatably connected to the first tube, institute in the left shell
The one end for stating projection screen is fixedly connected with the first tube, and the other end of the projection screen is fixedly connected with right shell body, described
First tube is equipped with the first elastic component, and first elastic component can generate the torsion for hindering or the first tube being promoted to rotate
Square, is connected with the supporting device in lateral symmetry arrangement between the left shell and right shell body, the supporting device includes two
The first support rod for being respectively hinged at left shell upper and lower part and two are respectively hinged at the second of right shell body upper and lower part
Support rod, the first support rod and the second support rod positioned at left shell and right shell body same section are hinged in free end, institute
It states and is equipped with the second elastic component between left shell and the first support rod, second elastic component, which can generate, pulls the rotation of the first support rod
So that mobile pulling force occurs away from left shell for right shell body, one of them described second support rod is equipped with limiting slot, separately
One second support rod is equipped with the limited post for being embedded in limiting slot, and the limited post can reciprocatingly slide along limiting slot.
2. transversely opened and closed parallel activity hinge according to claim 1 cuts supporting type backrush projection screen, it is characterised in that：It is described
First tube is hollow tube, and first elastic component is the torsional spring being embedded in inside hollow tube, torsional spring one end
Hook be fixedly connected with hollow tube, the hook of described torsional spring the other end is fixedly connected with left shell.
3. transversely opened and closed parallel activity hinge according to claim 2 cuts supporting type backrush projection screen, it is characterised in that：It is described
A limit shaft for running through torsional spring is installed in left shell, the end of the limit shaft is equipped with limiting through hole, and the torsional spring is another
The hook and limiting through hole of one end, which pass through, trip bolt.
4. transversely opened and closed parallel activity hinge according to claim 1 cuts supporting type backrush projection screen, it is characterised in that：It is described
Second elastic component is to draw high spring.
5. transversely opened and closed parallel activity hinge according to claim 1 cuts supporting type backrush projection screen, it is characterised in that：It is described
The second tube is equipped in right shell body, the other end of projection screen is fixedly connected on the second tube.
6. transversely opened and closed parallel activity hinge according to claim 1 cuts supporting type backrush projection screen, it is characterised in that：It is described
The lower end of left shell and right shell body is respectively equipped with left end cap and right end cap in semilunar, the bottom of the left end cap and right end cap
Portion be equipped with it is a pair of perpendicular to projection screen and be in holder positioned opposite.
7. transversely opened and closed parallel activity hinge according to claim 6 cuts supporting type backrush projection screen, it is characterised in that：It is described
Left end cap and right end cap are equipped with groove that is perpendicular to projection screen and running through end cap, and the holder is U-shaped spring, the U-shaped
The both ends of spring are bent to form limiting section, and the side wall at the groove both ends is equipped with the limit hole being inserted into for limiting section.
8. transversely opened and closed parallel activity hinge according to claim 7 cuts supporting type backrush projection screen, it is characterised in that：It is described
The bottom surface of groove is equipped with a pair of limit hook for being limited to U-shaped spring in groove.
9. transversely opened and closed parallel activity hinge according to claim 6 cuts supporting type backrush projection screen, it is characterised in that：It is described
The top of left end cap is equipped with the limited block for being directed toward right end cap, and the top of the right end cap is equipped with the elastic opening for being directed toward left end cap
Part, the limited block include the engaging portion of the driving portion that lateral dimension changes from small to big and lateral dimension from large to small, the bullet
Property opening member include lock part that opening size transition part from large to small and opening size change from small to big, the engaging portion with
Lock part mutually abuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820249501.7U CN207882645U (en) | 2018-02-11 | 2018-02-11 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820249501.7U CN207882645U (en) | 2018-02-11 | 2018-02-11 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
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| Publication Number | Publication Date |
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| CN207882645U true CN207882645U (en) | 2018-09-18 |
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| CN201820249501.7U Active CN207882645U (en) | 2018-02-11 | 2018-02-11 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153101A (en) * | 2018-02-11 | 2018-06-12 | 广州市雄云视听设备有限公司 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
-
2018
- 2018-02-11 CN CN201820249501.7U patent/CN207882645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108153101A (en) * | 2018-02-11 | 2018-06-12 | 广州市雄云视听设备有限公司 | A kind of transversely opened and closed parallel activity hinge cuts supporting type backrush projection screen |
| CN108153101B (en) * | 2018-02-11 | 2023-11-07 | 广州市雄云视听设备有限公司 | Support type rollback projection screen is cut to horizontal open and shut parallel activity hinge |
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